In winter I wear jeans all the time because I feel so comfortable in them. It is hard to force myself to wear something else. In summer, my denim skirt gets worn a lot because it is cooler than jeans (temperature-wise) but more appropriate to my age and leg condition than shorts.

I like the new trend for the longer a-line denim skirts, with either the hip pockets or button front.

This version from See by Chloe is pretty near damn perfect: 

 Or this boho one is more A-line and I like the way it can sit low on the hips:

  
Some denim skirt inspiration:

   
         

A denim skirt would definitely be in my list of wardrobe essentials.